S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
Modeling the Plastic Deformation of Crystals with Thin Precipitates
- Han, Chung-Souk; Kim, June-Hyung; Chung, Kwan soo; Kang, Tae Jin
- Issue Date
- Int. J. Solids Struct. 43, 2398-2421
- Precipitates, present in most commercial alloys, can have a strong inﬂuence on strength and hardening behavior of a
single crystal. The eﬀect of thin precipitates on the anisotropy of initial slip resistance and hardening behavior of crystals is modeled in this article. For the convenience of the computational derivation and implementation, the material
formulation is given in the unrotated intermediate conﬁguration mapped by the plastic part of the deformation gradient.
Material descriptions for the considered two phased aggregates consisting in lattice hardening as well as isotropic
hardening and kinematic hardening are suggested. The corresponding elastic–plastic rate-independent algorithmic
treatment is derived and numerical simulations of various loading cases are presented to discuss and assess the performance of the suggested model and its rate-independent algorithmic treatment.
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